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Denso 234-4579 Oxygen Sensor
| Brand | Denso 234-4579 |
|---|---|
| Position | Upstream Left |
| Connector Gender | Female |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 0.708 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 18.11 |
| Product line | OE Style |
| Fits | Ram, Dodge, and SRT · 51 vehicles |
OE-style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Helps support quicker operation and efficient engine performance.
Threaded mounting. Female connector and 4-wire design for a straightforward install.
Cross-references Chrysler 68090640AA, Chrysler 68090640AB and Chrysler 68243213AA for the same application. See all 6.
Denso OE Style Oxygen Sensor 234-4579
Denso 234-4579 is a specific-fit heated oxygen sensor built for direct replacement on select Ram, Dodge, and Chrysler applications. It is engineered to match OE-style fitment and connector requirements for accurate installation on the listed vehicles.
Key Features
- Heated oxygen sensor for faster operating response
- Specific-fit design for direct replacement on listed applications
- 4-wire configuration with female connector
- Threaded mounting type with 0.708 in. thread diameter
- 18.11 in. wiring harness length
- OE Style replacement part number 234-4579
OE Style Construction
Denso’s OE Style line is built to match original equipment dimensions and connection points for a first-time fit. The sensor uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable sensor operation and long service life. For buyers searching for a Ram 1500 oxygen sensor, Ram 2500 downstream left oxygen sensor, or Ram 3500 OE replacement sensor, this part number 234-4579 is designed around those exact service needs.
This part cross-references NTK 23165 for the same application.
Vehicle Fitment
- Fits 2021-2024 Ram 2500, downstream left.
- Fits 2019-2024 Ram 3500, downstream left.
- Fits 2019-2022 Ram 1500 Classic, upstream left.
- Fits 2013-2018 Ram 1500, upstream left.
- Fits 2012-2018 Ram 2500, downstream left.
- Fits 2017-2018 Ram 3500, downstream right.
- Fits 2014-2015 Ram 3500, downstream right.
- Fits 2012-2018 Ram 3500, downstream left.
- Fits 2015-2017 Dodge Viper, downstream.
- Fits 2017 Ram 1500, downstream right.
- Fits 2012 Ram 1500, downstream right.
- Fits 2013-2016 Dodge Dart, upstream.
- Fits 2013-2016 Ram 1500, downstream.
Common Issues This Sensor Can Address
- Check engine light related to oxygen sensor performance
- Incorrect air-fuel mixture readings from a worn sensor
- Reduced fuel economy caused by slow sensor response
- Driveability concerns tied to contaminated or aging sensor elements
- Failed emissions testing due to sensor fault codes
Installation Notes
Confirm the connector style, wire count, and sensor position before installation. This Denso oxygen sensor is a specific-fit replacement, so matching the listed downstream left, downstream right, or upstream location is important for proper operation. Use the vehicle application details for the exact Ram, Dodge, or Chrysler service position, and verify thread engagement before final tightening.
Quality Assurance
Denso manufactures and tests this oxygen sensor to OE standards for fit and function. The design focuses on accurate replacement dimensions, stable sensor performance, and protection of the sensing element for dependable service on the listed applications.
| Year | Make | Model | Submodel | Drive Type | Position | Notes |
|---|---|---|---|---|---|---|
| 2024 | Ram | 2500 | — | — | Downstream Left | O.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style |
| 2024 | Ram | 3500 | — | — | Downstream Left | O.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style |
| 2023 | Ram | 2500 | — | — | Downstream Left | O.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style |
| 2023 | Ram | 3500 | — | — | Downstream Left | O.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style |
| 2022 | Ram | 1500 Classic | — | — | Upstream Left | O.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style |
| 2022 | Ram | 2500 | — | — | Downstream Left | O.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style |
| 2022 | Ram | 3500 | — | — | Downstream Left | O.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style |
| 2021 | Ram | 1500 Classic | — | — | Upstream Left | O.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style |
| 2021 | Ram | 2500 | — | — | Downstream Left | O.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style |
| 2021 | Ram | 3500 | — | — | Downstream Left | O.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style |
| 2020 | Ram | 1500 Classic | — | — | Upstream Left | O.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style |
| 2020 | Ram | 3500 | — | — | Downstream Left | O.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style |
| 2019 | Ram | 1500 Classic | — | — | Upstream Left | O.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style |
| 2019 | Ram | 3500 | — | — | Downstream Left | O.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style |
| 2018 | Ram | 1500 | — | — | Upstream Left | OE Style |
| 2018 | Ram | 2500 | — | — | Downstream Left | OE Style |
| 2018 | Ram | 3500 | — | RWD | Downstream Right | OE Style |
| 2018 | Ram | 3500 | — | — | Downstream Left | OE Style |
| 2017 | Dodge | Viper | — | — | Downstream | OE Style |
| 2017 | Ram | 1500 | Special Service | — | Downstream Right | OE Style |
| 2017 | Ram | 1500 | — | — | Upstream Left | OE Style |
| 2017 | Ram | 2500 | — | — | Downstream Left | OE Style |
| 2017 | Ram | 3500 | — | RWD | Downstream Right | OE Style |
| 2017 | Ram | 3500 | — | — | Downstream Left | OE Style |
| 2016 | Dodge | Dart | — | — | Upstream | OE Style |
| 2016 | Dodge | Viper | — | — | Downstream | OE Style |
| 2016 | Ram | 1500 | — | — | Upstream Left | OE Style |
| 2016 | Ram | 1500 | — | — | Downstream | OE Style |
| 2016 | Ram | 2500 | — | — | Downstream Left | OE Style |
| 2016 | Ram | 3500 | — | — | Downstream Left | OE Style |
| 2015 | Dodge | Dart | — | — | Upstream | OE Style |
| 2015 | Dodge | Viper | — | — | Downstream | OE Style |
| 2015 | Ram | 1500 | — | — | Upstream Left | OE Style |
| 2015 | Ram | 1500 | — | — | Downstream | OE Style |
| 2015 | Ram | 2500 | — | — | Downstream Left | OE Style |
| 2015 | Ram | 3500 | — | RWD | Downstream Right | OE Style |
| 2015 | Ram | 3500 | — | — | Downstream Left | OE Style |
| 2014 | Dodge | Dart | — | — | Upstream | OE Style |
| 2014 | Ram | 1500 | — | — | Upstream Left | OE Style |
| 2014 | Ram | 1500 | — | — | Downstream | OE Style |
| 2014 | Ram | 2500 | — | — | Downstream Left | OE Style |
| 2014 | Ram | 3500 | — | RWD | Downstream Right | OE Style |
| 2014 | Ram | 3500 | — | — | Downstream Left | OE Style |
| 2013 | Dodge | Dart | — | — | Upstream | OE Style |
| 2013 | Ram | 1500 | — | — | Upstream Left | OE Style |
| 2013 | Ram | 1500 | — | — | Downstream | OE Style |
| 2013 | Ram | 2500 | — | — | Downstream Left | OE Style |
| 2013 | Ram | 3500 | — | — | Downstream Left | OE Style |
| 2012 | Ram | 1500 | — | — | Downstream Right | OE Style |
| 2012 | Ram | 2500 | — | — | Downstream Left | OE Style |
| 2012 | Ram | 3500 | — | — | Downstream Left | OE Style |
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